I don't have any wisdom regarding the severity, but I had to cover something up. Our PO hot-glued (what's up with that?) a picture on the wall behind the stove, adjacent to the entry door. Vibration shook it loose and it pulled the vinyl off of the substrate in several places.

Not sure what I'm looking at but it looks like the area where a previous owner may have made a patch when he had to get to the back side of the door hinge to tighten the bolts/nuts. Check that the door hinges are tight to the shell.

After ensuring the hinges are tight, go to a 'sheet metal shop' and have them make a 'backsplash' for you.. take it all the way to the door trim to cover the area. You MAY need to get back in there some day...

Deerhunter1 good question. I too am new to airstream, wondered the best way you might check on the a/c unit, wax, etc. on the roof. Wondered if the roof would hold your weight. I hope someone can share their tricks for roof maintenance and upkeep.